diff --git a/etc/atbapp/ATBAPP.ini b/etc/atbapp/ATBAPP.ini
index 8ee0043..1d00eec 100644
--- a/etc/atbapp/ATBAPP.ini
+++ b/etc/atbapp/ATBAPP.ini
@@ -75,6 +75,11 @@ useDecimal=yes
 [MOBILISIS_CalculatePricePlugin]
 useDebug=1
 tariffFileName=/etc/psa_tariff/tariff01.json
+useSimpleSteps=yes
+plusStep=30
+minusStep=10
+
+
 
 [ATBDeviceControllerPlugin]
 serialPort=ttymxc2